Since childhood, we have been asked to do the “three ones”, that is, when reading and writing, the distance between the eyes and the book should be kept more than one foot; between the body and the desk to keep a fist distance; when holding a pen to keep an inch distance between the hand and the pen tip. Not many of us really do this, so many of us have glasses of our own. Now, in order to get rid of our children’s glasses, please instruct them to make sure to develop this good habit. 1. Avoid using your eyes continuously for a long time. The pressure of higher education makes more and more homework on the desk, and the night battle becomes a daily routine, but please give yourself ten minutes to rest your brain after an hour of continuous reading and homework, and look into the distance to prevent continuous tension in the inner and outer muscles of the eye, and the spasm caused by poor circulation and increased eye pressure. 2, avoid reading books in bright light. The disadvantages of this believe that people who have read books in bright light know, look for a long time, the eyes will appear black shadow, which is the retinal macula stimulated by bright light after the role of the afterimage. Long-term reading in bright light, intraocular muscle over-regulation, will contribute to the occurrence and development of myopia, strong light on the retina, especially the macula damage, so that the visual acuity decreases, and even cause permanent vision loss. 3, sit upright, not hunchback. Leaning very close or lying down to do homework or reading, which is easy to cause excessive ciliary muscle tension and fatigue, which in turn causes or deepens myopia. Reading distance should be moderate, the distance between the book and the eyes to maintain a minimum of 30 centimeters, and the height of the table and chairs should also be adapted to the body, do not compromise. Do not take too long to read. No matter doing homework or reading, the time should not be too long. Every hour or so, you should take a short break and practice turning your eyes or looking into the distance. Sufficient light, light should be sufficient and comfortable. 4, avoid watching TV and playing video games for a long time. Now television and computer games have become two major killers of vision. Long hours of watching TV, it is easy to cause visual fatigue, strict control of the time spent watching TV: after every 30 minutes, you need to take a break from the eyes. Or close your eyes, or do an eye exercise, it is best to use the time to broadcast commercials to the outdoors for a change of air, look into the distance. 5, avoid reading books while riding in a car or walking. Do not let go of the sporadic car, walking time in order to show that you study hard, walking hands will often shake, car will be upside down from time to time, can cause continuous tension in the eye muscle, it is easy to cause visual fatigue and adjustment spasm. Change this habit, this time you can listen to English listening, radio news, or completely relaxed, do not regret it only when the eyes are bad. 6, the use of computers and computer Do not watch TV too close to the distance, watch TV should be maintained with the TV screen diagonal 6-8 times the distance, every 1 hour must rest for a moment. Note that the brightness can not be too high, for the good, there are conditions for friends, it is recommended to use LCD TV. Not LCD TV does not harm eyesight, just LCD screen does not flicker, can reduce eye fatigue. 7, daily precautions sleep is not less, regular rest and rest, sleep deprivation body is easy to fatigue, easy to cause myopia. Do more outdoor sports often look into the distance to relax the eye muscle, and more contact with nature, green mountains and wilderness is beneficial to eye health. Nutritional intake should be balanced.